Filament winding apparatus
CA 2009115 C · Owner: Lecompte, George W. · Inventors: Lecompte, George W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filament winding apparatus (10) has a bobbin slidably, nut non-rotatably, received on a tube mounted to a base. A cylindrical case (14) has an internal circumferential groove (20) with gear teeth (21,22) which mesh with an orbiting cylindrical bail (38). A base mounted sun gear (36) located within the case (14) meshes with bail gear teeth (42) driving it along both a circular path and about itself as an axis. A filament (46) to be wound passes through an eyelet (24) axially mounted to the case (14), through the bail (38) and secured to the bobbin. Rotation of the sun gear (36) winds the filament onto the bobbin while not subjecting the filament to sharp bending stresses and, during which …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 1, 1990 and granted September 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.